Diagnostics Of The 1979-S &
1981-S Proof CoinsHow Do I Know If It's a Ty-1 or Ty-2?by Ken Potter - NLG

As most collectors know, there are two Mint mark varieties known for both the 1979-S and
1981-S Proof coins with the so-called Type-2 being quite valuable on both dates of the
Susan B. Anthony dollar and the 1981-S cent. The Kennedy halves have also done
fairly well for both dates. The trouble is that many collectors have trouble
distinguishing one Mint mark variety from the other. That is the purpose of this
guide! Good Luck!